import React,{useState} from 'react'
import { Navigate } from 'react-router-dom'

export default function Home() {

  const [sum, setSum] = useState(1)

  return (
    <div>
      <h3>我是Home组件</h3>
      {sum == 2 ? <Navigate to="/about"/> : <h4>当前sum的值是:{sum}</h4>}
      <button onClick={() => setSum(2)}>点我将sum变为2</button>
    </div>

  )
}
